List of islands by area
Islands 100,000 km2 (39,000 sq mi) and greater

Rank
Island's name
Area (km2)
Area (sq mi)
Country or countries
1
Greenland
2,130,800
822,700
Greenland, forms part of the Danish Realm ( Denmark)
2
New Guinea
785,753
303,381
Indonesia (Papua and West Papua) and Papua New Guinea
3
Borneo
748,168
288,869
Indonesia (Central, East, North, South and West Kalimantan provinces), Malaysia (Sabah and Sarawak states) and Brunei
4
Madagascar
587,041
226,658
Madagascar
5
Baffin Island
507,451
195,928
Canada (Nunavut)
6
Sumatra
443,066
182,812
Indonesia (Aceh, Bengkulu, Jambi, Lampung, Riau and North, South and West Sumatra provinces)
7
Honshu
225,800
87,200
Japan (Chūbu, Chūgoku, Kansai, Kantō and Tōhoku regions)
8
Victoria Island
217,291
83,897
Canada (Northwest Territories and Nunavut)
9
Great Britain
209,331
80,823
United Kingdom (England, Scotland and Wales)
10
Ellesmere Island
196,236
75,767
Canada (Nunavut)
11
Sulawesi
180,681
69,761
Indonesia (Gorontalo and Central, North, South, Southeast and West Sulawesi provinces)
12
South Island
145,836
56,308
New Zealand (Canterbury, Otago, Southland, West Coast, Tasman, Nelson, Marlborough regions)
13
Java
138,794
53,589
Indonesia (Banten, Jakarta, Yogyakarta and Central, East and West Java provinces)
14
North Island
111,583
43,082
New Zealand (Northland, Auckland, Waikato, Gisborne, Bay of Plenty, Taranaki, Hawke's Bay, Manawatu-Wanganui and Wellington regions)
15
Luzon
109,965
42,458
Philippines (Bicol Region, Cagayan Valley, Calabarzon, Central Luzon, Cordillera Administrative Region, Ilocos Region, and National Capital Region)
16
Newfoundland
108,860
42,030
Canada (Newfoundland and Labrador)
17
Cuba (main island)
105,806
40,852
Cuba
18
Iceland (main island)
101,826
39,315
Iceland

Question: What is the size of the eleventh-largest island in the world in square kilometers and square miles?
Answer: Sulawesi is the eleventh-largest island with an area of 180,681 square kilometers or 69,761 square miles.